Dump-car.



A. CAMPBELL.

DUMP CAR.

APPLICATION FILED JAN. 31. 190B. 91 3,357. Patented Feb. 23, 1909.

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(if e WITNESSES.- INVENTOR jun/MMA ./Vfg/f/e 6am/abe# A. CAMPBELL.

DUMP GAR.

APPLIGATmN FILED JAN. 31. 1908.

91 3,357. Patented Feb. 23, 1909.

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IN VEN TOR /1/'5 A TTORNE v5 Wl TNESSES.'

A. CAMPBELL.

DUMP GAR.

APPLICATION FILED JAN. s1, 190s.

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DUMP GAR.

APPLICATION FILED JAN. s1, 190e.

Patented Feb. 23, 1909.

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IN VEN TOR rj//e fam/ e// WITNESSES: f MM eL UNITED 'STATES PATENT OFFICE.

ARGYLE CAMPBELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO ENTERPRISE RAILWAY EQUIPMENT COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DUMP-CAR.

Application led January 31, 1908.

A lowing is a specification.

My invention relates to im rovements in dumpcars, and more particu arly to dump cars having steel center sills.

In steel frame dump cars heretofore in use, although the steel center sills are fref quently required to be very deep as, forexample,- from twenty to thirty inches, the space between the center sills has not been utilized to increase the load receiving capacity of the car.

The object of my invention is to provide an improved construction of steel frame dump car, in which the space between the renter sills may be etfedtually utilized as part. of the load carrying or receiving capacity of the car` and the center of the load asa whole materially lowered, and in which the load, or a portion thereof, may be dumped either lcentrally or to the side as4 required.

M v invention consists in the means I employ to practically accomplish this object or result as herein shown and described and more particularly specifiedin the claims.

In thel accompanying drawing forming a part of this specification, Figure 1 is a side elevation of a steel under frame dump car embodying my invention. Fig. 2 is a plan view. Fig. is an end elevation, and Fig. 4 is a vertical cross section on the broken line -l-4 of Fig. 2.

ln the drawing, 1-1 represent the center sills' ot a steel under frame dum car, the same being preferably spaced a out two feet apart, and preferably from vtwenty to thirty inches indepth according to conditions or requirements.

2 are the transverse diaphragms of the steel under frame extending between the center sills 1-1 and the side framework 3. Extending at intervals between the center sills 1-1 are flanged diaphragms 4. At each side of the center sills 1, a series of side dump doors 5 are hinged at their inner edges to hinge brackets 6 secured to the center sills near the upper edges thereof.

These side dum doors 5 are each furnished at the outer e ge with suitable means for specincation f Letters Patent.

y Patented Feb. 23, 1909.

Serial N0. 413,554.

raising and lowering the doors, the same preferably consisting in a guide or box Z on the under side of each door -near the outer edge thereof, a sliding bar or latch 8 furnished with anti-friction rollers 9, a notched link 10 and connecting links 11 and a polygonal drum 12 on a winding shaft 13,

which has a notch 14 to engage the notch of thelink 10. The diaphragme 4 between theI center sills divide this space into a series of load carrying pockets, each of which is furnished with' a pair of central dump doors 15, which are hinged at their outer edges to hinge brackets 16 secured to the center sills at the lower edges thereof. These central dump doors are also furnished-with suitable means for raising and lowering them, the same preferably com rising a winding drum 17 on longitudinal y extendino' shaft 18 and a chain 19 passing over a 'ro ler or pulley 20, journaled on a bracket 20a secured to the central diaphragm 4. If desired, both doors 15-'15 of each pair ma be operated by the same shaft 1,8, byprovi' ing the connecting chain 19 with an equal, izer 21 and branch connectiony 22.

As illustrated in the drawing, the center sills are shown as being of the girder type, or with their lower edges upwardly inclmed .at the portions thereof adjacent to the trucks and this gives a longitudinal inclination to the two pairs of doors 15, 15 adjacent to the trucks, while the two middle pair of doors 15, 15 are longitudinally horizontal. The doors 15, 15, when closed, as illustrated in Fig. 4, abut at their ends against the lower edges or flanges'23of the central dia phragms 4, and these ilanges or' lower edges 23 are preferably transversely inclined about as illustrated in the drawing. The operating shaft 18 for the central dump doors 15 is preferably operated by means of a worm gear 24 thereon which meshes with a worm 25 on an upright shaft 26 at the end of thel car and which is furnished with a pawl lever' 27 and pawl 28 and ratchet 29. The upri ht shaft 26 is preferably further provided wit a locking ratchet 30 engaged by a pawl lever 31 held in operative position by a hinged wei ht 32.

T e central load carrying pockets 33 below the general level of the car floor 34 and between the center sills, preferably occu y substantially the entire space between t e t car trucks. They materially increase the load to the loweredges of the center sills, said of the lower edges of said girder type center carrying capacity of the car, materially lower the load as a whole and thus increase the stability of the car, and also afford means for centrally dumping a portion of the load, this being particularly serviceable in distribution of ballast.

l. In a dump car, the combination with deep girder type center sills spaced apart substantially as set forth, and having a load carrying space between them, of side dump doors hinged at their inner edges to the upper edges of the center. sills and central narrow dump doors hinged-at their outer edges narrow dump doors following the contour sills substantially as specified.

2. In a dump car, the combination with center sills spaced apart substantially as set as forth and having a load carrying space between them, of. side dump doors opening y from the upper edges of said center sills, and central narrow dump doors opening from the lower edges of said center sillsg substansaid narrow dump doors following the contour of the lower edges of said girder type center sills substantially as specified.

. ARGYLE CAMPBELL. Witnesses:

PEARL ABRAMS, H. M. MUNDAY. 

